Answer:
b
Step-by-step explanation:
Choice b is the only one that has the first equation properly graphed. The boundary line for that equation will have intercepts that can be found by setting the opposite variable to zero.
x-intercept = 25/2 = 12.5 (on the positive x-axis)
y-intercept = 25/5 = 5 (on the positive y-axis)
That is, the boundary line has a shallow negative slope, and is shaded below. Only graph 'b' has such a line.
The little lines on each side of the rhombus mean that all the sides are the same length.
We can set line LM and MN equal to solve for X, then we can solve the length of a side.
3x-3 = x+7
Add 3 to each side:
3x = x +10
Subtract x from each side:
2x = 10
Divide both sides by 2:
x = 10/2
x = 5
Now we have the value for x, replace x in one of the side formulas:
x +7 = 5+7 = 12
Each side = 12 units.
The perimeter would be 12 + 12 + 12 + 12 = 48 units.
Answer:
x = 12
Step-by-step explanation:
Given: the overall angle m∠ADC = (16x − 55) and m∠ADB = 5x - 13.
To solve for x , you can make another equation where
90° (right angle) + m∠ADB = m∠ADC; substitute with terms given
90 + (5x - 13) = (16x - 55); remove parenthesis and combine numbers
5x + 77 = 16x - 55; subtract 5x from both sides
77 = 11x - 55; add 55 to both sides
11x = 132; divide by 11
x = 12
Answer:
0.90357142857
Step-by-step explanation:
75 B because there’s a difference of 25 in each temperature interval